Measuring air change rates using the PFT technique in Residential Buildings in Northern Portugal

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2006

Autores

M. Pinto (Autor) Outra; V. P. de Freitas (Autor) FEUP; H. Stymne (Autor) Outra; C. A. Boman (Autor) Outra

Ata de Conferência Internacional

Título: 27th AIVC Conference

Páginas: 761-766

Lyon, France, 29 de Dezembro a 1 de Janeiro

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia civil

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia civil

Outras Informações

Abstract (EN): Portugal has technical recommendations and standards regarding ventilation rates in natural ventilation systems. However, these ventilation rates have not been fulfilled in most residential buildings recently erected in Portugal. We believd that natural ventilation systems alone are unlikely to guarantee the recommended ventilation, and so we characterized the performance of a mixed ventilation system consisting of an air inlet through self-a-adjustable inlets in bedrooms and living room, natural exhaust in bathrooms and fan exhaust systems in kitchens. We measured ventilation conditions in a residential complex of 94 apartments in the Porto area using the passive tracer gas method, more precisely the PFT technique. The study evaluates the façade's permeability and the respective air exchange rates per compartment using the PFT technique. Seven flats were analyzed, six of which have a mixed ventilation system (continuous exhaust system enabling the performance of the two systems to be compared. The experimental results allow, namely, the evaluation of the influence of insulation, a grid with low head loss and a static ventilator in the duct of the bathroom and the continuous exhaust ventilation in the kitchen. KEYWORDS: Ventilation, dwellings, air change rate (ACH), PFT

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Notas: Vol. III

Nº de páginas: 6